Thanks for the replies everyone. I was looking at the dpreview page for the D90 and saw in the comparisons that there wasn't as much detail in the pictures from the D90 as in the comparison photos. Those pictures are here:
http://www.dpreview.com/reviews/nikond90/page20.asp If you go trough the rest of the comparisons on subsequent pages, there are others that look similar -- like they're soft or some detail is missing compared to the Canon, Pentax and even the D80. I believe they used the 50mm prime for all tests, so the D80 and 90 would have used the same exact lens and everything is tripod mounted in the same position.
Anyway, I guess I have a lot to ponder.
For the other posters who posted about getting better glass, I already have a 18-200VR along w/ the 18-135, Sigma 10-20, 50 1.8, 85 1.8, I just ordered the Sigma 30 1.4 and the Sigma 18-50 2.8. (Doing my part to help stimulate the U.S. economy!

)Thinking about getting the Nikon 35 2.0 to see which is better the Sigma 30 vs Nikon 35. I heard great things about both, but am leaning toward the 30 just because I do mostly low light photography and that's an extra stop. I am an amateur hobbyist gear freak I guess.
After thinking about it, I'm leaning now sorta toward the D90 just because I just realised there is no way I could hand the camera over to DH or DS and ask them to take a picture if I bought the D300. They wouldn't know what to do with it.

That makes me somewhat sad because I really was leaning toward the D300 before I thought about all this... Keep the opinions coming... Unfortunately where I live we only have Ritz camera and
Best Buy. They had the D90 which was giving me the F--- error because the lens wasn't seated right and no one would fix it. (Have to disconnect security thing to fix.) So I couldn't try it. No one had the D300 in stock. They had the D700 at Ritz!

That's way too much camera for me.

ETA: Oh yeah I forgot I also have the 70-300VR lens! NAS!